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Published byFelicity Butler Modified over 9 years ago
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The outer most layer of Earth Made of Oxygen, silicon and aluminum
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Made of basalt Younger, more dense, thinner
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Made of granite Older, less dense, thicker
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Solid plastic-like rock 1800 miles thick Convection currents supply most of Earth’s internal heat
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Made of liquid metal: iron and nickel 1400 miles thick Creates Earth’s magnetic field
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Made of solid iron 800 miles Slowly cooling and getting larger
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Man has explored the Earth to a depth of 7.6 miles
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Largest hole ever dug: scientific expedition 12,262 meters (7.6 miles)
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The temperature at this depth was 180°C (356°F), at which point the rock became more like a plastic than a solid, stopping further drilling
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Largest hand dug hole in the world Largest volume of diamonds produced 600 meters (1,970 ft)
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